“I have the advantage of knowing your habits, my dear Watson,” said he. “When your round is a short one you walk, and when it is a long one you use a hansom. As I perceive that your boots, although used, are by no means dirty, I cannot doubt that you are at present busy enough to justify the hansom.”

“Excellent!” I cried.

“Elementary,” said he. “It is one of those instances where the reasoner can produce an effect which seems remarkable to his neighbour, because the latter has missed the one little point which is the basis of the deduction.“

“I fancy,” said Psmith, “that this is one of those moments when it is necessary for me to unlimber my Sherlock Holmes system. As thus. If the rent collector had been there, it is certain, I think, that Comrade Spaghetti, or whatever you said his name was, wouldn’t have been. That is to say, if the rent collector had called and found no money waiting for him, surely Comrade Spaghetti would have been out in the cold night instead of under his own roof-tree. Do you follow me, Comrade Maloney?”